Pneumatic hand-held piston tightening device

Abstract

A pneumatic hand-held piston tightening device, comprising a pneumatic wrench, characterized in that the pneumatic wrench comprises a bottom handle, a swing head is rotatably installed at the top of the bottom handle, a rotary connecting part is installed at the bottom of the swing head, an upper air channel is arranged at the bottom of the rotary connecting part, a pneumatic motor is installed at the top of the upper air channel, an output shaft is connected to the pneumatic motor, and a tightening tool is installed on the output shaft. The utility model discloses an external air inlet at the bottom handle air inlet, and after control, the gas passes through the lower air channel and is introduced into the swing head, the pneumatic motor in the swing head rotates to drive the output shaft, the tightening tool installed on the output shaft clamps and tightens the piston, the setting of the pneumatic wrench can adjust the tightening torque, the tightening tool is convenient for clamping and tightening the piston rod, the machining groove arranged in the tightening tool can clamp the piston rods of different sizes, the piston rod is conveniently placed in the machining groove and is fixed relative to the machining groove, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of piston installation technology, and in particular to a pneumatic hand-held piston tightening device. Background Technology

[0002] Hydraulic support jacks are an important component of mining supports, with a wide range of applications and a large number of users. Currently, for the piston installation process of small-diameter (cylinder diameter ≤ φ100mm) jacks, manufacturers fix the piston rod on a table and manually screw the piston onto the piston rod, which is a time-consuming process. When tightening the piston, assembly workers rely entirely on experience to apply force, resulting in inconsistent tightening torque and low assembly efficiency and inconsistent assembly quality.

[0003] Therefore, it is essential to provide a pneumatic hand-held piston tightening device to address the shortcomings of existing technologies. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies by providing a pneumatic handheld piston tightening device. External air is introduced through the air inlet at the bottom handle. After being controlled by a control knob, the gas flows through the lower air passage and into the swing head. A pneumatic motor in the swing head rotates, driving the output shaft. A tightening fixture mounted on the output shaft clamps and tightens the piston. The pneumatic wrench allows for adjustment of the tightening torque, facilitating the clamping and tightening of the piston rod by the tightening fixture. Simultaneously, the machining groove within the tightening fixture can clamp piston rods of different sizes, allowing the piston rod to be placed within and fixed relative to the groove, thus improving work efficiency.

[0005] The above-mentioned objectives of this utility model are achieved through the following technical means.

[0006] A pneumatic handheld piston tightening device is provided, including a pneumatic wrench, characterized in that: the pneumatic wrench includes a bottom handle, a swing head is rotatably mounted on the top of the bottom handle, an air inlet is mounted on the bottom of the bottom handle, a control button is mounted on one side of the bottom handle, the air inlet is connected to a lower air passage, the lower air passage is connected to an air chamber, a rotating connecting part is mounted on the bottom of the swing head, an upper air passage is provided at the bottom of the rotating connecting part, the upper air passage and the lower air passage are connected through the air chamber, a pneumatic motor is mounted on the top of the upper air passage, an output shaft is connected to the pneumatic motor, and a tightening fixture is mounted on the output shaft.

[0007] Specifically, the tightening fixture includes a fixture body, which has three different sized machining grooves inside. Two sets of pins are installed inside the fixture body, and the pins pass through the machining grooves.

[0008] Specifically, rubber sealing rings are installed on both the lower and upper airways, and these rubber sealing rings are respectively installed at the connection points between the air chamber and the upper and lower airways.

[0009] Furthermore, the rotating connection part includes an upper connecting plate and a lower connecting plate. The upper connecting plate is integrally formed and installed at the bottom of the swing head, and the lower connecting plate is integrally formed and installed at the top of the bottom handle. A rotating shaft is installed between the upper connecting plate and the lower connecting plate.

[0010] Specifically, a connecting ring is installed on one end of the tooling body near the output shaft, and the connecting ring is snapped onto the output shaft.

[0011] This invention allows external air intake through the bottom handle air inlet. After being controlled by the control button, the gas flows through the lower air passage and into the swing head. The pneumatic motor in the swing head rotates, driving the output shaft. The tightening fixture installed on the output shaft clamps and tightens the piston. The pneumatic wrench allows for adjustment of the tightening torque, facilitating the clamping and tightening of the piston rod by the tightening fixture. At the same time, the machining groove inside the tightening fixture can clamp piston rods of different sizes, making it easy for the piston rod to be placed in the machining groove and fixed relative to it, thus improving work efficiency. Attached Figure Description

[0012] The present invention will be further described with reference to the accompanying drawings, but the content of the drawings does not constitute any limitation on the present invention.

[0013] Figure 1 This is the front view of the pneumatic handheld piston tightening device of this utility model.

[0014] Figure 2 This is a schematic diagram of the tightening fixture in the pneumatic hand-held piston tightening device of this utility model.

[0015] from Figures 1 to 2 Including:

[0016] 1. Bottom grip;

[0017] 2. Shaking the head;

[0018] 3. Air intake;

[0019] 4. Control button;

[0020] 5. Lower airway;

[0021] 6. Air chamber;

[0022] 7. Rotate the connecting part;

[0023] 8. Upper airway;

[0024] 9. Pneumatic motor;

[0025] 10. Output shaft;

[0026] 11. Tighten the fixture;

[0027] 12. Tooling body;

[0028] 13. Machining the groove;

[0029] 14. Pin;

[0030] 15. Rubber sealing ring;

[0031] 16. Upper connecting plate;

[0032] 17. Lower connecting plate;

[0033] 18. Rotating shaft;

[0034] 19. Connecting ring. Detailed Implementation

[0035] The present invention will be further described in conjunction with the following embodiments.

[0036] Example 1:

[0037] like Figure 1-2 As shown, a pneumatic handheld piston tightening device includes a pneumatic wrench, characterized in that: the pneumatic wrench includes a bottom handle 1, a swing head 2 is rotatably mounted on the top of the bottom handle 1, an air inlet 3 is mounted on the bottom of the bottom handle 1, a control button 4 is mounted on one side of the bottom handle 1, the air inlet 3 is connected to a lower air passage 5, the lower air passage 5 is connected to an air chamber 6, a rotating connecting part 7 is mounted on the bottom of the swing head 2, an upper air passage 8 is provided at the bottom of the rotating connecting part 7, the upper air passage 8 and the lower air passage 5 are connected through the air chamber 6, a pneumatic motor 9 is mounted on the top of the upper air passage 8, an output shaft 10 is connected to the pneumatic motor 9, and a tightening fixture 11 is mounted on the output shaft 10.

[0038] When in use, the air inlet 3 of the bottom handle 1 of the pneumatic wrench allows an external air source to enter. After entering the bottom handle 1, the external air source enters the lower air passage 5 and is temporarily stored in the air chamber 6. The bottom handle 1, air inlet 3, lower air passage 5, and air chamber 6 constitute a compressed air channel. The control button 4 installed on the bottom handle 1 can control the air chamber 6. The control button 4 changes the air intake pressure through the regulating valve to control the opening of the air chamber 6. The gas in the air chamber 6 can enter the swing head 2 through the upper air passage 8. The angle of the swing head 2 is adjusted on the bottom handle 1 by rotating the connecting part 7. After being transmitted through the upper air passage 8, the gas can enter the pneumatic motor 9. The motor is driven by the gas and drives the output shaft 10 installed on it. The tightening fixture 11 installed on the output shaft 10 clamps and tightens the piston rod.

[0039] The tightening fixture 11 includes a fixture body 12. The fixture body 12 has three different sizes of machining grooves 13 inside. Two sets of pins 14 are installed inside the fixture body 12, and the pins 14 pass through the machining grooves 13.

[0040] When clamping the piston rod, the tooling body 12 adapts to different piston rod specifications through three sets of machining grooves 13 of different specifications. The pin 14 set inside the tooling body 12 can be matched with the process hole on the piston rod, so that the piston rod is fixed inside the tooling body 12, which makes it easier for the tooling body 12 to cooperate with the pneumatic wrench to increase the tightening speed of the piston rod.

[0041] Both the lower air passage 5 and the upper air passage 8 are equipped with rubber sealing rings 15. The rubber sealing rings 15 are installed at the connection between the air chamber 6 and the upper air passage 8 and the lower air passage 5, respectively. The rubber sealing rings 15 installed in the lower air passage 5 and the upper air passage 8 can improve the sealing of gas transmission, prevent gas leakage, and ensure the efficiency of the pneumatic motor 9.

[0042] The rotating connection part 7 includes an upper connecting plate 16 and a lower connecting plate 17. The upper connecting plate 16 is integrally formed and installed at the bottom of the swing head 2, and the lower connecting plate 17 is integrally formed and installed at the top of the bottom handle 1. A rotating shaft 18 is installed between the upper connecting plate 16 and the lower connecting plate 17. The rotation of the swing head 2 and the bottom handle 1 is achieved by the rotating shaft 18, which connects the upper connecting plate 16 and the lower connecting plate 17. At the same time, the upper air passage 8 can pass through the rotating connection part 7 and be connected to the inside of the swing head 2.

[0043] A connecting ring 19 is installed at one end of the tooling body 12 near the output shaft 10. The connecting ring 19 is snapped onto the output shaft 10. The tooling body 12 and the output shaft 10 are fixed by the connecting ring 19, so that the output shaft 10 drives the tooling body 12 to rotate, thereby enabling the tooling body 12 to clamp and tighten the piston rod.

[0044] During the production process, external air is introduced through the air inlet 3 at the bottom handle. After being controlled by the control button 4, the gas passes through the lower air passage 5 and enters the swing head 2. The pneumatic motor 9 in the swing head 2 rotates and drives the output shaft 10. The piston is clamped and tightened by the tightening fixture 11 installed on the output shaft 10. The pneumatic wrench can adjust the tightening torque to facilitate the clamping and tightening of the piston rod by the tightening fixture 11. At the same time, the machining groove 13 set in the tightening fixture 11 can clamp piston rods of different sizes, making it easy for the piston rod to be placed in the machining groove 13 and fixed relative to it, thus improving work efficiency.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A pneumatic hand-held piston tightening device comprising a pneumatic wrench, characterized in that: The pneumatic wrench includes a bottom handle, a swing head rotatably mounted on the top of the bottom handle, an air inlet mounted on the bottom of the bottom handle, a control button mounted on one side of the bottom handle, a lower air passage connected to the air inlet, an air chamber connected to the lower air passage, a rotating connecting part mounted on the bottom of the swing head, an upper air passage provided at the bottom of the rotating connecting part, the upper air passage and the lower air passage communicating through the air chamber, a pneumatic motor mounted on the top of the upper air passage, an output shaft connected to the pneumatic motor, and a tightening fixture mounted on the output shaft.

2. The pneumatic hand-held piston tightening device according to claim 1, characterized in that: The tightening fixture includes a fixture body, which has three different sized machining grooves inside. Two sets of pins are installed inside the fixture body, and the pins pass through the machining grooves.

3. The pneumatic hand-held piston tightening device according to claim 2, characterized in that: Both the lower air passage and the upper air passage are provided with rubber sealing rings, which are respectively installed at the connection between the air chamber and the upper and lower air passages.

4. The pneumatic hand-held piston tightening device according to claim 3, characterized in that: The rotating connection part includes an upper connecting plate and a lower connecting plate. The upper connecting plate is integrally formed and installed at the bottom of the swing head, and the lower connecting plate is integrally formed and installed at the top of the bottom handle. A rotating shaft is installed between the upper connecting plate and the lower connecting plate.

5. The pneumatic hand-held piston tightening device according to claim 4, characterized in that: A connecting ring is installed on one end of the tooling body near the output shaft, and the connecting ring is snapped onto the output shaft.

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